Extended Self-Tests; Test Memory - HP 9000 300 Series Service Handbook

Extended Self-Tests
When you select Extended, the self-test starts over and the long memory test
will he run. It takes about 4 seconds per megabyte. The standard, or default,
memory test takes about 1 second per megabyte.
This mode also invokes extended testing on LAN by doing externalloophack
and cable testing.
With the LAN interface, all extended test functions will work. If an external
Media Attachment Unit is not connected for AUI interfaces, the extended test
will report a failure.
Test Memory
Memory tests are performed on main memory. Both read/write and parity
tests are run. You will see error messages displayed if memory fails. Memory
error messages are interpreted differently for each type of memory test.
For word-wide main memory error messages, these messages appear at the
bottom of your display in this format:
!!emory Failed at (addre55)
(V: BBCCDDEE, R: BBCCDDEF)
In the above message, the hex address had the hex data BBCCDDEE written
(W) into and read (R) out of the address. If the read data is different than the
write data as shown in the above example in the least significant hex digits,
that indicates an error.
Parity error messages are of two types:
Parity Bit Error At (address)
means a failure was detected in the parity checking RAM for the address
shown.
Data Parity Error AT (address)
means a RAM failure was detected at the indicated address. The address
in parity error messages is the lowest of four consecutive addresses. Errors
could have occurred in any or all of these four addresses. Parity errors will
be displayed during the Test Memory phase of the self-test and testing will
continue.
Diagnostics 5-9